Fire-pot for stoves and furnaces



wb @my (No Model.) 2-Sheets-Sheet 1.

G. H. HESS. v

FIRE POT FOR STOVES AND FURNAGES. No. 333,627. Y Patented Jan. 5, 1886.

(No Model.) 2 Sheets-Sheet 2.

G. H. HBSS. FIRE POT PoR sToVBs AND PURNAGES.

No. 333,627. Patented Jan. 5, 1886.

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UNITED STATES PATENT OEEICE.

GEORGE H. HESS, OF CHICAGO, ILLINOIS.

FIRE-POT FOR STOVES AND FURNACES.

SPECIFICATION farming part of Letters Patent No. 333,627, dated January5, 1886.

Application filed March 9, 1885.

To a/ZZ whom it may concern.-

Be it known that I. GEORGE H. HEss, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Fire-Pots for Stoves andFurnaces, of which the following is a specilicatlon.

My invention relates to improvements in round, oval, and rectangularre-pots for coal stoves and furnaces; and the object of my iuvention isto construct a fire-pot economically, and so arranged as to be easilyset up or placed together, not easily injured or broken, and durable,and in such a manner that a supply of air will be furnished to the outeredge of the fire throughout the body of the burning mass in saidfire-pot, at the surface thereof, or at both of said places when myimproved firepot is placed in any stove or furnace.

My invention is also constructed with a view to placing the same in anystove or furnace Without change or alteration in said stove or furnace.

My invention is formed or built up of a varying number of round, oval,or rectangular ring-sections placed the one upon the other, ashereinafter more fully described, the said rings having airducts casttherein, and ribs or projections cast thereon.

I have illustrated my invention by the drawings accompanying thisspecification, and forming a part thereof.

Like letters refer to like parts throughout the several views.

Figure 1 is a cross-section on line l l of Fig. 2. Fig. 2 is across-section on line 2 2 of Fig. 1. Fig. 8 is a cross-section showingone more section than appears in the-other figures of the drawings. Fig.4 is a broken section on the same line (2 2 of Fig. 1) as Fig. 2, withribs or projections on the outside of the re-pot. Fig. 5 is a plan viewof the edge or bottom of the upper ring used. Fig. 6 is a plan view ofthe lower edge or bottom of the ring used by me as the middle ring orrings.

A is the lower ring-section of my improved fire-pot.

B is a ring'section used in my invention. One, two, or threering-sections, B, may be used, as preferred.

serial No'. 158,201. (No model.)

C is a ring-section used in my invention, forming the upper part of thefire-pot.

D is an air-duct cast in A.

D is an air-duct cast in B. When ringsection Bis placed uponring-section A, (shown in Figs. 1` and 3,) air-duct D forms acontinuation of air-duct D.

E E are ribs or projections cast on ringsections A B C.

F F are the ribs or projections in which airducts D D' are cast.

G is a cement joint.

H is a flange on the upper and outer edge of the several ring-sections,serving, in conneet-ion with the outer surface of the next highersection, to form the basin in which cementjoint G is made.

X X are projections or fingers extending toward the grate. The form of:fingers and the forni of grate used is immaterial.

The lower edge or bottom of ring-sections B and C are of such form,Figs. 2 and 3, as to form the top or upper surface of the horizontaloutlet or escape f or the air rising in airducts D D.

Themanner in which my invention is placed in a stove, furnace, or thefire-box of a boiler, Snc., is: Bing-section A is placed in the stove orfurnace, cnc. One or more ring-sections B B are placed upon ring-sectionA. Ring-sed tion C is placed upon ring-section B. The sections may beplaced together before putting the fire'pot in the place for which it isdesigned, and cement joints G G made.

The object of the cement joints G G and of the top ring covering theair-ducts D D' is to prevent the escape of heated gases from said jointsand vertically from said air-ducts, thus allowing a draft from theburning mass contained in the re-pot,in place of forcing heated air intoand over said fire.

The operation of my invent-ion when in use is: rIhe burning masscontained in the fire-pot heats the material (preferably cast-iron) ofwhich the fire-pot is constructed. An upward current of heated air isformed in air-ducts D D' and discharged into the burning mass containedin said fire-pot through the outlets above described.

The result attained by the above-described invention is a very completeand perfect com- ICO bustion of the mass of coals in the fire-pot andthe smoke and gases evolvedtherefrom.

Projections or ribs E and F serve when placed on the inner surface ofthe fire-pot to keep the burning mass contained therein from closecontact with the body of the fire-pot, and when such contact is desiredthese ribs or projections are placed on the outside, as in Fig. 4.

I am aware that a horizontally-corrugated lire-pot formed of a plate orplates, and with an outside diameter smaller than the inside diameter ofthe stove in which the re-pot is placed, thus forming an air-chamberbetween the same, has been heretofore made, and that numerousperfor-ations in the corrugated 1ining have also been made,communicating with said air-chamber.

I am also aware that an interior auxiliary lire-pot located at adistance from an outer fire-pot, t0 creat-e an intervening air-space,and

constructed with a top liange having an annular. series of .perforationato form airpassages, has been heretoforeconstructed.

I do not claim, broadly, means for introducing-a current of air into orover the burning mass contained in the fire-pot.

Having thus described my invention, its construction and operation, whatI claim, and desire to secure by Letters Patent, is-

In a fire-pot, the combination of ringsec tions A B, provided withair-ducts therein, and ange or rim H thereon, ring-section C, restingupon and covering ring-section B and the air-ducts therein, and cementjoint G between said flange H and the outer surface of the nexthigherringsection, all substantially as described, and for the purpose setforth.

v GEO. H. I-IESS. Witnesses:

Mrs. E..K. HAGUE, FLORA L. BROWN.

